Protected metal article



J. H. YOUNG.

PROTECTED METAL ARTICLE.

APPLICATION FILED MAR. 26, 1921.

1,418,348. PavemedJun 6, 1922.

.Zrwerzian afizy PATE T OFFICE.

James HO'WA YOUNG, or rrrrsnuaen, PENNSYLVANIA, ASSIGNOR "ro E. n. nonnarson oonrnnmor PITTSBURGH, rnNNsYnvANm, A conclusion or PENNSYLVANIA.

misses.

Specification of Letters Patent. Patented June 6', 1922 Application filed March 26, 1921,. Serial No. 455,989.

To all whom it may concern:

Be it known that I, JAMns HOWARD YoUNc, a citizen of the United States, residing .in Pittsburgh, in thev county of Allegheny and State of Pennsylvania, have in vented an Improvement in Protected Metal Articles, of which the following description cle of corrodible metal, such as iron or steel,

is protected against corrosion by a layer of asphalt or like bituminous material alone or in conjunction with layers of fibrous material, such as asbestos, wool or other fibrous felts.

Protective metal articles of this character described are efiicient against corrosion as long as the bituminous layer remains intact, but where the bituminous layer is exposed, it is subject to the deleterious action of light, heat, and atmospheric conditions; also to abrasion and other mechanical actions in handling, crating and shipping, and in some cases to injury by adhesion'of one protected article to another. The present invention has for its object to provide a protected metal article of. the character described, which is provided with a protective covering of a modified fibrous material, which is tough, durable, weatherresisting, nontacky at temperatures around 140 F more or less light and heat-reflecting and capable of being painted with ordinary paints.

A modified the purpose, is a cellulose paper treated with solutions of relatively non-corrodible metals in such manner as to incorporate the metals in the fiber and provide the same with the desirable characteristics above-mentioned.

Such treated paper may be designated as a metallized fiber, which is applied in sheet form to the hydrocarbonaceous layer on the metal article, while said ,layer is 1n a tacky condition and is thereby adhesively secured to the metal article. Y

Fig. 1 is a plan of a protectedmetal article embodying this invention, and

fibrous material suitable for Fig. 2, a section on an enlarged scale on be applied in any suitable manner as by passin the article a througha bath of melted asp alt.

The asphalt or like layer 6 has applied to it while in-a tacky condition,a layer a of metallized fiber, which is adhesively afiixed to the metal article a by the asphalt or like layer 6. The metallized fiber is a cellulose paper having incorporated therein, relatively non-corrodible metals such as copper,

zinc and the like, and may be'made by passing the paper through a bath of cupro-ammonium hydroxide of such strength that it has the power of dissolving or gelatinizing cellulose. As the paper is drawn through the bath, the fibers of the paper are acted .upon by the solution in such way as to gelati'nize the outside of the fibers. The paper is then passed under pressure between rolls which serve the purpose of compressing the gelatmized fibers together, thereby forming a substantially impervious sheet.

The sheets are then dried at a low temperature, which results in loss of water and resisting and is capable of being painted with ordinary paints, consequently it affords a hi hly eflicient and inexpensive fibrous protecting layer for thebituminous layer 6, whereby an inexpensive, eficient and durable protected metal article may be nous or like hydrocarbonaceous material produced, which will not stick to ether and covering said corrodible metal; and a layer 0 which can be used in warm an cold (:11- of metallized paper adhesivel afiixed to mates. Said hydrocarbonaceous materia Cl im; In testimony whereof, I have signed my As an improved article of manufacture, a name to thls specification.

' protected metal article comprising an article of corrodible metal, a layer of bitumi- JAMES HOWARD YOUNG. 

